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Effects of 2,4-D and MCPA on Germination and Early Growth

Published online by Cambridge University Press:  12 June 2017

M. Rojas-Garcidueñas ,
M. A. Ruiz  and
J. Carrillo
M. Rojas-Garcidueñas
Affiliation:
Botany, Instituto Technológico, Monterrey, N. L. (México)
M. A. Ruiz
Affiliation:
Departamento de Parasitologia y Botánica, Instituto Technológico, Monterrey, N. L. (México)
J. Carrillo
Affiliation:
Departamento de Parasitologia y Botánica, Instituto Technológico, Monterrey, N. L. (México)
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Abstract

Wheat, bean, and pigweed (Amaranthus retroflexus) seeds were immersed in solutions of 2,4–D (ester) and MCPA (ester) ranging from 0.001 ppm. and then germinated in petri dishes. Both products induced analogous effects but MCPA appeared to be slightly less active. Germination in pigweed was promoted by the 0.1 ppm. solutions. Growth of plumule and radicle in wheat was stimulated by lower (0.001 to 1 ppm.) concentrations and depressed by higher ones (100 and 1000 ppm.), the threshold between stimulation and depression being around 10 to 100 ppm. depending on the product and the organ affected.

Type
Research Article
Information
Weeds , Volume 10 , Issue 1 , January 1962 , pp. 69 - 71
Copyright
Copyright © 1962 Weed Science Society of America 

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References

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